One is designed by committee, the other is designed by a company with a focus on trying to make electric cars more usable and desirable than fossil cars. Also,

One is designed by committee, the other is designed by a company with a focus on trying to make electric cars more usable and desirable than fossil cars. Also, CCS wanted to reuse some of the pins from the L1/L2 J1772 plug, but the original plug didn’t have room for larger pins. Tesla’s plug was designed from the beginning to be eventually capable of fast charging.